Mixing device



Feb. 21, 1950 1... M. WEEKS MIXING DEVICE Filed April 50, 1948 Inventor150mm M. WEE/"(.5

Patented Feb. 21, 1950 UNITED STATES PATENT OFFICE MIXING DEVICE LeonardM. Weeks, Milwaukee, Wis. Application April 30, 1948, Serial No. 24,361

4 Claims.

The present invention relates to mixing devices and it consists in thecombinations, constructions and arrangements of parts herein describedand claimed.

It is an object of the present invention to provide a mixing devicewhich may be incorporated in an internal combustion engine to ensuremore nearly perfect carburation.

Another object of the invention is the provision of a mixing devicehaving no moving parts and which will cause a whirling of the gas andair mixture passing therethrough in a novel and eificient manner.

Another object of the invention is the provision of a mixing devicehaving automatic means for whirling a gaseous mixture in one directionand means for reversing such whirling motion with a correspondinglygreater admixture of the contents of the matter passing through thedevice.

Another object of the invention is the pro- I vision of a device of thecharacter set forth which is simple and inexpensive in its constructionand economical and efiicient in use.

Other and further objects of the invention will become apparent from areading of the following specification taken in conjunction with thedrawing, in which:

Figure 1 is an elevational view, partly in section, of an embodiment ofthe invention in use with an internal combustion engine,

Figure 2 is a vertical sectional view taken along line 2-2 of Figure 4,

Figure 3 is a sectional view taken along line 33 of Figure 2,

Figure 4 is a perspective view of the device forming the invention, and

Figure 5 is a top plan view of the device.

Generally there is provided a mixer for internal combustion enginescomprising a substantially cylindrical perforated insert having a flangeat one end for fastening the same in position in an intake pipe. Thebody is cut away upon one side and a series of spiralled fins providedalong the bottom and a further series of oppositely spiralled finsprovided along the bottom edge of the cut away portion of the device.The fins extends only part way toward the center of the device therebyleaving an uninterrupted passage through the center thereof.

Referring more particularly to the drawing, there is shown therein amixing device for internal combustion engines comprising a single pieceof perforated material, preferably brass or the like and formed into asubstantially open ended cylinder l0 having an annular flange H.

One half of the lower part of the cylinder I0 is cut away and a seriesof inwardly extending spiral fins 12 formed on the resulting lower edgethereof. The lower end of the remaining one half is formed with a,series of inwardly extending spiralled fins l 3 which are oppositelyspiralled to the fins 12. A central passage 14 is left unimpaired.

The mixer is snugly mounted in an intake pipe l5 leading to an intakemanifold Hi. The pipe I5 is provided with a flange I! which is joinedwith a flange [8 of a, pipe l9 by means of bolts 20. The flange H of themixer device is held between the flanges l1 and I8.

In operation, it will be apparent that a mixture of gas and liquid fuelis fed from a carburetor (not shown) through a jet 2] which directs itsforce against a butterfly valve 22 which, in turn, will cause the fiowof mixture to be first directed against the fins I 2. The fins l2mixture to assume a whirling motion and at the same time direct a goodlyportion of the mixture to the fins #3 which, being oppositely spiralled,will further admix the gasoline particles with the air in the mixturecoming from the carburetor. The now fully carburated mixture will passinto the intake manifold I6 and be fed to the various cylinders of theengine in conventional manner. The central passage I4 is provided so asnot to impede the flow of mixture from the carburetor to the intakemanifold. It will be understood that by providing a more nearly completemixture of gas and air to the cylinder that there is less possibility ofliquid gasoline droplets forming upon the sides of cylinders to therebyimpair the efficiency of the engine and to add carbon deposits thereon;

While but one form of the invention has been shown and described herein,it will be readily apparent to those skilled in the art that many minormodifications may be made without departing from the spirit of theinvention or the scope of the appended claims.

What is claimed is:

1. A device of the character described comprising a hollow cylindricalbody having one half of one end cut away and formed with a plurality ofspiral fins and having the remaining lower end formed with a pluralityof oppositely spiralled fins.

2. A device of the character described comprising a hollow perforatedcylindrical body having one half of one end cut away and formed with aplurality of spiral fins and having the rewill cause the.

maining lower end formed with a plurality of oppositely spiralled fins.

3. A device of the character described comprising a hollow cylindricalbody, an outwardly extending flange at one end, a series of spiral finsextending half way around the other end, an extended portion of the bodyopposite said fins and a second series of oppositely spiralled finsformed in said extended portion.

4. A device of the character described comprising a hollow perforatedcylindrical body, an outwardly extending flange at one end, a seriesother end, an extended portion of the body opof spiral fins extendinghalf way around the posite said fins and a second series of oppo- 15 4sitely spiralled fins formed in said extended portion.

LEONARD M. WEEKS.

REFERENCES orrEn The following references are of record in the file ofthis patent:

UNITED STATES PATENTS 10 Number Name Date 1,396,054 Potter Nov. 8, 19211,584,046 Smith May 11, 1926 1,778,790 Brandl et a1 Oct. 21, 19302,028,937 Lefebre Jan. 28, 1936

